Tuesday, September 30, 2014

You
will choose an article or science related video of over 2 pages or 45
minutes on science current event. It will fall into one (or more) of
these categories:

·Scientific discovery – for example, scientists find comets may have delivered the water found in earth’s oceans.

·Science-related event – for example, the Japan earthquake/tsunami/nuclear plant meltdown; the launch of a space probe.

·A cultural change/happening that involves science/technology – for example, bicyclists’ clothing that can act as a radar gun to show drivers how fast they’re moving.

·Science in public policy – for example, a bill or law that deals with science (cap on carbon emissions).

The
article must be timely, meaning it’s been published within the past
one/two months. Videos should not be older than 2 years. Finally, technology articles are okay, but I will not
accept any product announcements or reviews.

Create
a write-up of your current event, summarizing the story and answering
key questions. You will include a copy of the story you are citing or
the golden page format for the video, movie or program.

Science current events will:

Cite the news source, using the Oceana Golden page format for citations found on the Oceana website. Magazine Article:

Procedures: Hints, Make
sure your final procedures include labeled diagrams

for the Rd just do your best to describe
how to use each material in a logical order

for a diagram show how the P-1000/ P-200 window will read for each different
volume extraction and how you will use the balance.

you will conduct at least of 3 trials of
data collection for each member
of your group

you will need to empty reaction tubes of
any trace of water and re use-them between trials.

Data Table:

(example: Remember
that you need room for at least 9 trials!!)

Measurer

Mass of empty tube

Mass of tube and H2O

Mass of H2O

Volume of H2O

Calculated H2O
density

DON’T forget to
record observations of data collection.

Analysis:

This section should include
a graph of the data (mass on the y-axis & volume on the x-axis), the
formula for density, show at least one example of the math you did when
calculating density and answer the following questions. Hint you will want to convert measured μL – mL to answer the questions

Check your accuracy for the measurement
lab; calculate percent error for the average of your three trials?

Percent
error = (measured average density – 1g/ml) . 100%

1g/ml

What is the accuracy for the average of
all trials by your group?

Which measuring device is most
accurate? Explain your answer

Conclusion:

Don’t forget to
explain what happened? Restate your
question and hypothesis and why you thought it was the best guess. What do you know about the answer to the
question? How does the data support your
answers? i.e.use numeric comparisons to
support your answers! How did human
error influence your data? How could you
further/redo this experiment for more accurate results? What is the social context for this lab? (This should be at least 3 paragraphs)

Test: We will fill the mouths
of volunteers with water to get an approximate volume of their oral cavity. We will do this multiple times and take an
average so that we can compare class data.
We will then determine whose mouth is “the biggest”, boys or girls. We will also measure the height of all
participants, in meters.

Materials/table

·2 cups *Note NO LIQUID, CONTAMINATED WITH SALIVA, MAY
GO INTO THE GRADUATED CYLINDERS!